I GOT TIRED OF HAVING DULL KNIVES SO I DECIDED TO TRY NINJA FOODI  NEVERDULL SYSTEM  KNIFE  SHARPENER  AND IM SO HAPPY WITH IT IT IS EASY TO USE AND IT SHARPENS MY KNIVES I DONT HAVE TO WORRY ABOUT  A DULL KNIFE  AGAIN I ABSOLUTELY  WOULD RECOMMEND THIS PRODUCT BECAUSE  IT IS AMAZING.